2021-04-29: Upgrade failed on dev.gitlab.org
Current Status
The automated omnibus upgrade failed on dev.gitlab.org, which caused an outage for the host. This is a severity2 issue because dev is a critical dependency for our packaging and release infrastructure.
The root cause was a code change in gitlab-org/omnibus-gitlab!5180 (merged) which caused reconfigure to fail. We resolved this by manually editing code on the host and reverted the change.
Timeline
View recent production deployment and configuration events (internal only)
All times UTC.
2021-04-29
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03:40
- @craig receives blackbox alert for dev.gitlab.org -
03:47
- @craig declares incident in Slack. -
03:53
- @craig posts error log. -
03:47
- @craig attempts to downgrade and, upon failure, bumps to severity2 -
04:05
- @thiagocsf points-out possible code issue -
04:07
- @craig identifies recent change -
04:20
- @craig and @jarv update the local cached copy of the code to allow process to complete. IncidentMitigated. -
04:28
- @craig creates MR to revert the recent change gitlab-org/omnibus-gitlab!5213 (merged)
Corrective Actions
Corrective actions should be put here as soon as an incident is mitigated, ensure that all corrective actions mentioned in the notes below are included.
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Incident Review
Summary
- Service(s) affected:
- Team attribution:
- Time to detection:
- Minutes downtime or degradation:
Metrics
Customer Impact
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Who was impacted by this incident? (i.e. external customers, internal customers)
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What was the customer experience during the incident? (i.e. preventing them from doing X, incorrect display of Y, ...)
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How many customers were affected?
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If a precise customer impact number is unknown, what is the estimated impact (number and ratio of failed requests, amount of traffic drop, ...)?
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What were the root causes?
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Incident Response Analysis
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How was the incident detected?
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How could detection time be improved?
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How was the root cause diagnosed?
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How could time to diagnosis be improved?
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How did we reach the point where we knew how to mitigate the impact?
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How could time to mitigation be improved?
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What went well?
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Post Incident Analysis
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Did we have other events in the past with the same root cause?
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Do we have existing backlog items that would've prevented or greatly reduced the impact of this incident?
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Was this incident triggered by a change (deployment of code or change to infrastructure)? If yes, link the issue.
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Lessons Learned
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Guidelines
Resources
- If the Situation Zoom room was utilised, recording will be automatically uploaded to Incident room Google Drive folder (private)